bim-visual-programming-automation

BIM Visual Programming Automation

Overview

This skill provides visual programming scripts and Python nodes for automating BIM workflows. Extract data, modify elements in batch, generate schedules, and integrate with external systems.

Note: Examples use Autodesk® Revit® and Dynamo™ APIs. Autodesk, Revit, and Dynamo are registered trademarks of Autodesk, Inc.

Key Capabilities:

• Batch element modification
• Data export/import
• Schedule generation
• Parameter management
• External data integration
• Automated QTO

Quick Start (Dynamo Python)

# Dynamo Python Script - Export all walls to Excel
import clr
clr.AddReference('RevitAPI')
clr.AddReference('RevitServices')
from RevitServices.Persistence import DocumentManager
from Autodesk.Revit.DB import FilteredElementCollector, BuiltInCategory

doc = DocumentManager.Instance.CurrentDBDocument

# Get all walls
collector = FilteredElementCollector(doc)
walls = collector.OfCategory(BuiltInCategory.OST_Walls).WhereElementIsNotElementType().ToElements()

# Extract data
wall_data = []
for wall in walls:
    wall_data.append({
        'id': wall.Id.IntegerValue,
        'name': wall.Name,
        'length': wall.get_Parameter(BuiltInParameter.CURVE_ELEM_LENGTH).AsDouble() * 0.3048,
        'area': wall.get_Parameter(BuiltInParameter.HOST_AREA_COMPUTED).AsDouble() * 0.0929
    })

OUT = wall_data

Element Data Extraction

Comprehensive Element Extractor

# Dynamo Python Node - Extract all element data
import clr
clr.AddReference('RevitAPI')
clr.AddReference('RevitServices')
clr.AddReference('RevitNodes')

from RevitServices.Persistence import DocumentManager
from Autodesk.Revit.DB import *
import Revit
clr.ImportExtensions(Revit.Elements)

doc = DocumentManager.Instance.CurrentDBDocument

def get_element_data(element):
    """Extract data from Revit element"""
    data = {
        'id': element.Id.IntegerValue,
        'category': element.Category.Name if element.Category else None,
        'name': element.Name,
        'level': None,
        'parameters': {}
    }

    # Get level
    level_param = element.get_Parameter(BuiltInParameter.SCHEDULE_LEVEL_PARAM)
    if level_param:
        level_id = level_param.AsElementId()
        if level_id.IntegerValue > 0:
            level = doc.GetElement(level_id)
            data['level'] = level.Name if level else None

    # Get all parameters
    for param in element.Parameters:
        try:
            if param.HasValue:
                if param.StorageType == StorageType.Double:
                    data['parameters'][param.Definition.Name] = param.AsDouble()
                elif param.StorageType == StorageType.Integer:
                    data['parameters'][param.Definition.Name] = param.AsInteger()
                elif param.StorageType == StorageType.String:
                    data['parameters'][param.Definition.Name] = param.AsString()
        except:
            pass

    return data

def extract_category(category_enum):
    """Extract all elements of a category"""
    collector = FilteredElementCollector(doc)
    elements = collector.OfCategory(category_enum).WhereElementIsNotElementType().ToElements()
    return [get_element_data(e) for e in elements]

# Extract structural elements
categories = [
    BuiltInCategory.OST_Walls,
    BuiltInCategory.OST_Floors,
    BuiltInCategory.OST_StructuralColumns,
    BuiltInCategory.OST_StructuralFraming,
    BuiltInCategory.OST_Doors,
    BuiltInCategory.OST_Windows
]

all_data = {}
for cat in categories:
    cat_name = cat.ToString().replace('OST_', '')
    all_data[cat_name] = extract_category(cat)

OUT = all_data